MybatisPlus 自动填充

实现MetaObjectHandler接口

重写方法

@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {
        if (UserContext.getUser() != null) {
            this.strictInsertFill(metaObject, "creator", String.class, UserContext.getUser().getUsername());
        }
        this.strictInsertFill(metaObject, "creationtime", LocalDateTime.class, LocalDateTime.now());
        Class<?> clazz = metaObject.getOriginalObject().getClass();
        //如果存在最后更新时间
        try {
            Field lastupdate = clazz.getDeclaredField("lastupdate");
            this.strictInsertFill(metaObject, "lastupdate", Timestamp.class, new Timestamp(System.currentTimeMillis()));
        } catch (NoSuchFieldException ex) {
            log.info(clazz.getName() + "不需要保存lastupdatetime");
        }
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        if (UserContext.getUser() != null) {
            this.setFieldValByName("modifier", UserContext.getUser().getUsername(), metaObject);
        }
        this.setFieldValByName("modifiedtime", LocalDateTime.now(), metaObject);
        Class<?> clazz = metaObject.getOriginalObject().getClass();
        //如果存在最后更新时间
        try {
            Field lastupdate = clazz.getDeclaredField("lastupdate");
            this.setFieldValByName("lastupdate", new Timestamp(System.currentTimeMillis()), metaObject);
        } catch (NoSuchFieldException ex) {
            log.info(clazz.getName() + "不需要保存lastupdatetime");
        }
    }
}

注意的是：如果存在数据不覆盖，使用strictInsertFill/strictUpdateFill。比如创建时间，创建人

如果想覆盖数据，使用setFieldValByName。比如修改时间，修改人